Abstract
Superionic conductors are characterized by an almost liquid-like mobility of one of the constituent ion species. The simplest theoretical concept of particle mobility in such a system is based on Brownian motion of particles in a periodic potential. Within this picture it is possible to identify two limiting cases:
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(i)
Barrier height large compared with kBT and not too large damping of the particle oscillations. For this case standard free rate theory applies and the dc conductivity is thermally activated.
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Beyeler, H.U., Brüesch, P., Pietronero, L., Schneider, W.R., Strässler, S., Zeller, H.R. (1979). Statics and Dynamics of Lattice Gas Models. In: Salamon, M.B. (eds) Physics of Superionic Conductors. Topics in Current Physics, vol 15. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-81328-3_4
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DOI: https://doi.org/10.1007/978-3-642-81328-3_4
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